Rotary engine.



No. 645,437. I Patented Mar. is, 1900.

K. THOMANN.

ROTARY ENGINE.

(Application filed Nov. 9, 1898.\ (No Model.)

y 3 Sheets-Sheet l.

No. 645,437; Patented Mar. 13, I900.

K. woman.

No. 645,437. Patented. Mar. [3, I900. K. THOMANN.

ROTARY ENGINE.

(Application filed Nov. 9, 1898.\ (No Model.) 3 Sheets-Sheet 3.

mVM k UNIT STATES ATEN trio.

KARL THOMANN, OFHALLE, GERMANY.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 645,437, dated March13, 1900-. Application filed November 9,1898. Serial No. 695,980. Nomdet To all whom. it may concern.-

Be it known that I, KARL THOMANN, a subject of the Emperor of Germany,and a resident of Halle, in the Empire of Germany, have invented certainnew and useful Improvements in Rotary Engines, of which the followin gis a specification.

This invention has for its object an improved rotary motor for steam,gas, or compressed air. The annular working chambers of the same aredivided in the ordinary manner into sickle-shaped compartments by meansof annular rings located on a rotary plain disk and the saidcompartments again divided, by means of the slides or pistons arrangedin the rings, into admission, expansion, and discharge chambers.

This improved motor is characterized, first, by the working chamberslying on both sides of the plain disk being mutually diametricallydisplaced-that is to say, lying eccentric to one another; second, by theslides or pistons through which the sickle-shaped chambers are dividedoscillating in the rings of the plain disk and by the rings traveling onthe inner cores of the casing being guided;

third, by the central position of the shaft being secured by means of aspecial form of the capable of being mutually adjusted so that the motoralways remains tight; sixth, by the parts which work one in the otherbeing adj ustable by reason of their conical shape, and thereby allowingof an exact tight fitting of the same; seventh, by the casing beingrendered perfectly tight to the outside by means of an adjustable ring.

My improved apparatus is shown in the accompanying drawings, in whichFigure 1 is a vertical diametrical section of this improved motor withtapering or conical inner cores or surfaces. Fig. 2 is a verticalcross-section on the line II II of Fig. 1. Fig. 3 is a similar View toFig. 2 of the internal appearance of the casin g, while Fig. at is asectional View of the plain disk on the line IV IV of Fig. 5 and showingthe position of the feed-passages formed in the plain disk ofthe slidesor pistons. Fig. 5 is a vertical diametrical section of the plain disk.Figs. 6, 7, and

8 are separate views of the slides arranged at each side of the plaindisk with their conical guide-rings. Fig. 9 is a vertical diametricalsection of a similar motor with cylindrical inner surfaces. Fig. 10 is avertical cross-section of the motor shown in Fig. 9 on the line IX IX.Fig. 11 is a detail view.

The constructive arrangement of the motor is as follows: The two parts 1and 2 of the casing each has internally an eccentric core 3, projectingtoward the inside, so that as usual an annular chamber results. Bothhalves of the casing are, however, mutually displaced diametrically insuch a way that they stand eccentrically vertically to-one another, andthe driving-shaft 4, mounted in the inner core 3, is also eccentricallymounted in the said chambers. A plain disk 5 is mounted on thedriving-shaft 4 and carries on each side an annular ring 6, mountedconcentric to the driving-shaft. On each internal core a number ofslide-rings 7 are arranged, the number of which agrees with the numberof slides or pistons 8, situated on each side of the plain disk. In thepresent case three such slides 8 are employed, which are adapted to moveradially and to oscillate on each side of the plain disk in the annularworking chambers, and corresponding therewith there are on each innercore 3 three rings 7, each of which is connected with one of the slides8. v In each annular ring 6 bolts 9, which are slotted, but which arerevoluble, are mounted, and each of them carries a slide 8. As eachannular ring encounters with its outer surface at the point 00 the innerwall of its part of the casing and at the point y the outer surface ofits slide-ring 7 the annular working chamber is divided intosickle-shaped compartments, asmay be seen in Figs. 2 and 10. As,therefore, each inner core 3, on which the slide-rings 7 with the slides8 rotate, lies eccentrically to the driving-shaft 4., and therefore tothe axis of rotation of the plain disk 5, the slides 8 execute notmerely a reciprocatory movement in the bolts 9, but also an oscillatingone, and for this object the bolts 9 are provided, so that the slidesare always guided in a tight slot and yet can oscillate. Also in orderthat the slides in any position of the plain disk 5 may lie in theradius of the inner core they are, as

and discharge-chamber .lever 16.

already mentioned, guided by means of the rings 7.

The slides 8 divide each sickle-shaped chamber in the indicated numberinto an admission-chamber a, expansion-chamber e, (See Figs. 2 and 10.)The medium of pressure acts first in the inner sickleshaped chamber III,passes through the transfer-passage 10 into an outer sickle -shapedchamber V, and there acts again in order to finally escape through thedischarge-passage 11 to the exit. This action takes place on both sidesof the plain disk 5 at different places, but in the same direction, sothat the driving-shaft 1 does not experionce a strain on one side.

In order to be able to work with a variable charge, the steam-admissionpassage 12 opens into a segment-shaped recess 13 on the inner side ofthe inner core 3, in which recess a segment-shaped slide 14 is arranged.The latter is mounted on a shaft 15 and may be regulated from theoutside by means of a setting- The plain disk 5 has on each planesurface so-called feed-passages 17 which are shown in Fig. 4 on theplane surfaces and also in Fig. 5. As may be seen from this latterfigure, the feed-passages 17 have a special form. \Vhen by the rotationof the plain disk 5 they reach the dotted position 01, they are closedagainst the passage 12 and the charge is finished. If the slides 14 bemoved in the direction of the hands of a watch farther to the right, thecharge is increased, because the part of the segment-shaped recess 13corresponding with the passage 12 connects longer with the feed-passage.If two of the slides 8 in the sickle-shaped chamber III or V assume asymmetrical position to the vertical in the indicated position of themotor, the chamber contained between them must be regarded as a maximumexpansionchamber and the expansion reaches its end. From this positiononward the discharge 'must take place, and for this object atransfer-passage 10, provided with a trough-shaped recess r, arranged inthe casing, is provided, which recess expands or enlarges up to theposition 00, so that on the further movement of the slide a dischargemay take place from the said wedge-shaped expanding-chamber. In order,however, that the charge or feed may take place after the transfer ofthe medium of power from the sickle-shaped chamber III to V has takenplace alreadyin the indicated position of Fig. 2, thetransmission-passage in this chamberis also provided with a troughshapedextension 8, Figs. 2, 3, and 10. A discharge-passage 11, through whichthe consumed medium of power escapes, is also provided with a similartrough-shaped passage it. If the cylinder-surfaces which travel one onthe other become worn at the points :0 and y, they may again be renderedtight in case the motor is given a conical form, as is shown in Fig. 1,by screwing together the two casings. As the exact coincidence of thesurfaces engaging with one another causes Very much work, the inner wallof the casing and the. slide ring 7 may be made adjustable against theannular ring 6 of the plain disk 5, as is shown in the cylindrical formof construction represented in Figs. 9 and 11. For this object aseparate plain ring 19 is insert ed in the interior of the casing, whichforms the inner wall of the casing and may be exactly adjusted by meansof screws 20. The readjustment may, however, be effected also by meansof an eccentric shaft 21, (see Fig. 11,) arranged in the casing or inany other suitable manner.. The slide-ring 7 may, as shown in Fig. 10,also be adjusted by means of an eccentric shaft 22, mounted in the innercore 3, so that they again always travel quite tightly against theannular ring 6 of the plain disk.

In order to render the interior of the casing quite tight to theoutside, a ring 23 is screwed into the one casing half, which ringengages in a groove of the other half-casing. In this groove washeringmaterial is placed which'is compressed by means of the ring 23. Thewhole casing of the motor may in addition he provided with acovering-casim 26, Fig. 1,-

and also it may be heated by the dischargesteam or by fresh steam fromthe boiler.

In order to effect the centering of the driving-shaft 4, it is at bothsides of the plain disk 5 formed conically at the places h, as shown asan example in Fig. 1, and surrounded by a bush-bearing 1 which suitsitself to the partial conicity h of the shaft. The bush-bearing isscrewed into the internal core 3 and fixed by means of a safety-nut 24.A stufiing-box 25 of any suitable form of construction may also bearranged on the outer end of the bush-bearing, so that the motor isrendered entirely tight to the outside.

The working of this new motor is as follows: The power medium enters onboth sides of the plain disk through the feed-passages 12 and throughfeed-passages 17, situated in the plain disk, into the innersickle-shaped chamber III in front of the slide 8 lying nearestthereto-that is to say, in Fig. 1in front of the upperside-and acts withits entire pressure up to the feed-passage, While the rotation of theplain disk isolosed through the slide 14. From this point the expansiontakes place up to the maximum expansion admissible in the chamber untilthe medium of power has thus filled out the chamber 6 in Fig. 2 and thenpasses through that-roughpassage 1', overflow-passage 10, and throughthe trough-passage 5 into the sickle-shaped chamber r in front of thenext slide in order there to act again in the same manner. When it hasacted there, it is finally discharged through the passage 11,.and thisaction takes place on both sides of the plain disk-that is to say, in.each half .of the casing.

If such a motor be operated by steam, it may also work by condensationbut the mo- IIO tor remains a compound motor immaterially whether thedriving be effected by means of steam, gas, or compressed air.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

1. A rotary motor comprising a drivingshaft, a casing having afeed-passage, a discharge-passage, a core formed with an extension tothe feed-passage and with a segmental recess at its inner end with whichthe extension communicates and located eccentrically on thedriving-shaft and an annular chamber located eccentrically to thedriving-shaft, the shaft extending through the core provided with asegmental slide located in the segmental recess, a rotary disk havingfeed-passages in its face, and an annular ring located concentrically tothe driving-shaft, and dividing the annular chamber into sickle-shapedworking chambers located within and without the annular ring, the slidesworking radially through the annular ring and the slide-rings looselymounted on the core; each slide-ring being connected with a slide;substantially as described.

2. A rotary motor comprising a drivingshaft, a casing havingfeedpassages, discharge-passages, cores each formed with an extension tothe feed-passage, and with a segmental recess at its inner end withwhich the extension communicates, and located eccentrically on thedrivin g-shaf t and to each other and annular chambers locatedeccentrically to the driving-shaft and to each other, the shaftsextending through the cores each provided with a segmental slide locatedin the segmental recess, a rotary disk having feed-.

passages on its faces, and annular rings located concentrically to thedriving-shaft and dividing the annular chambers into sickleshaped Working chambers located within and without the annular rings, the slidesworking radially through the annular rings and the slide-ringslooselymounted on the cores; each.

slide-ring being connected with a slide; substantially as described.

3. A rotary motor comprising a drivingshaft,a casing,a feed-passage, atrough-shaped passage, a transfer-passage, a transmissionpassage, adischarge-passage a core formed with an extension to the feed-passagetherethrough, and located eccentrically on the driving-shaft, and anannular chamber located eccentrically to the driving-shaft, a rotarydisk having feed-passages in its face, and an annular ring locatedconcentrically to the driving-shaft, and dividing the annular chamberinto sickle-shaped working chambers located within and without theannular ring, the slides working radially through the annular ring, andthe slide-rings loosely mounted on the core; eaclr slide-ring beingconnected with a slide; substantially as described.

4. A rotary motor comprising a drivingshaft, a casing, a feed-passage,atrough-shaped passage, a transfer-passage, a trough-shapedtransmission-passage,a discharge-passage, a core formed with anextension of the feedpassage therethrough and with a segmentaloutlet-recess, and located eccentrically on the driving-shaft, and anannular chamber located eccentrically to the driving-shaft, a rotarydisk having feed-passages in its face, and an annular ring locatedconcentrically to the driving-shaft and dividing the annular chamberinto sickle-shaped working chambers located within and Without theannular rings, the slides working radially through the annular ring, theslide-rings loosely mounted on the core, each slide-ring being connectedwith a slide, the shaft extending through the core, having. at its innerend a segment-slide located in the segmental recess, and at its outerend a setting-lever; substantially as described.

5. A rotary motor comprising a drivingshaft, a casing having afeed-passage, a discharge-passage, a core located eccentrically on thedriving-shaft, and an annular chamber located eccentrically to thedriving-shaft, a rotary diskhaving feed-passages in its face and anannular ring located concentrically to the driving-shaft, and dividingthe annular chamber into sickle-shaped working ch ambers located withinand Without the annular ring the oscillating bolts having slots andmounted in the annularring, the slides working through the slots in theoscillating bolts and through the annular ring, and the slideringsloosely mounted on the core; each slidering being connected with aslide; substantially as described.

6. A rotary motor comprising a drivingshaft, a casing having two partsadjustable toward each other on the driving-shaft, and having feedpassages, discharge passages, cone-shaped cores located eccentrically onthe driving-shaft and to each other, and annular chambers, cone-shapedin radial section and located eccentrically to the driving-shaft and toeach other, a rotary disk having feed-passages on its faces and annularrings coneshaped in radial section and located concentrically to thedriving-shaft and dividing the annular chambers into sickle-shaped work-.ing chambers located within and without the annular rings, the slidesworking radially through the annular rings, the cone-shaped slide-ringsloosely mounted on the cores; each slide-ring being connected with aslide, and a packing-ring fittingin the annular grooves of the two partsof the casing; substantially as described. A

7. A rotary motor comprising a drivingshaft having conical projections,the bearingbushes adjustable on the conical projections, a casing havingfeed-passages, discharge-passages, cores located eccentrically on thedrivingshaft and to each other, and annular chambers locatedeccentrically to. the drivingshaft and to each other, a rotary diskhaving feed-passages on its faces and annular rings locatedconcentrically to the driving-shaft ICC 4 e45,4.er

and dividing the annular chambers into sickle-shaped working chamberslocated within and without the annular rings, the slides Workingradially through the annular rings and the slide-rings loosely mountedon the cores; each slide-ring being connected with a slide;substantially as described.

8. A rotary motor comprising a driving shaft, a casing formed in twoparts mutually displaced diametrically in such a Way that they standeccentrically vertically to one another, each part having afeed-passage, a discharge-passage, a core provided with an cecentricextension to the feed-passage and located eccentrically on thedriving-shaft, and an annular chamber located eccentrically to thedriving-shaft, a rotary disk, having feedpassages in its faces andannular rings lo-' cated concentrically to the driving-shaft, anddividing the annular chambers into sickleshaped working chambers locatedwithin and without the annular rings, and the slides working through theannular rings and each having a slide-ring loosely mounted on its core;substantially as described.

9. A rotary motor comprising a drivingshaft, a casing formed in twoparts mutually displaced diametrically in such a way that they standeccentrically vertically to one another, each part having afeed-passage, a discharge-passage, a core provided with an eccentricextension to the feed-passage and located eccentrically on thedriving-shaft, and an annular chamber located eccentrically to thedriving-shaft, plain rings providing an inner Wall to each annularchamber, means for adjusting the plain rings, a rotary disk havingfeed-passages in its faces and annular rings located concentrically tothe drivingshaft, and dividing the annular chambers into sickle-shapedworking chambers located within and without the annular rings, and theslides Working through the annular rings, and each having a slide-ringloosely mounted on its core; substantially as described. 10. Arotary-motor comprising a drivingshaft, a casing formed in two partsmutually displaced diametrically in such a way that they standeccentrically vertically to one another, each'part having afeed-passage, a discharge-passage, a core provided with an eccentricextension to the feed-passage and located eccentrically on thedriving-shaft, and an annular chamber located eccentrically to thedriving-shaft, a rotary disk having feedpassages in its faces andannular rings located concentrically to the driving-shaft, and dividingthe annular chamber into sickleshaped working chambers located withinand without the annular rings, means for adj usting the annular ringsradially, and the slides working through the annular rings, and eachhaving a slide-ring loosely mounted on its core; substantially asdescribed.

11. A rotary motor comprising a drivingshaft, a casing having afeed-passage, a discharge-passage, a core formed with an extension tothe feed-passage and with a segmental recess at its inner end with whichthe extension communicates andan annular chamber, the shaft extendingthrough the core provided with a segmental slide located in thesegmental recess, a rotarydisk having feedpassages in its face, and anannular ring, and the slides working radially through the annular ring;substantially as described.

The foregoing specification signed at Halle, Germany, this 22d day ofSeptember, 1898.

- KARL. THOMANN. In presence of- O. H. DAY, HENRY HASPER.

